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Finding the Fourth Proportional to 7,385.80, 11,080.10 and 2,389.52

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Solution

The fourth proportional to 7,385.80, 11,080.10 and 2,389.52 is: 3,584.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,385.80 : 11,080.10 = 2,389.52 : x
  2. Step 2: Convert to fraction form
    7,385.80/11,080.10 = 2,389.52/x
  3. Step 3: Cross multiply
    7,385.80x = 11,080.10 × 2,389.52
  4. Step 4: Simplify right side
    7,385.80x = 26,476,120.55
  5. Step 5: Solve for x
    x = 26,476,120.55/7,385.80
  6. Step 6: Final answer
    x = 3,584.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.